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Process Equipment and Plant Design

Process Equipment and Plant Design
The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is

0.5
0.75
1.25
0.25

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Process Equipment and Plant Design
1.2 to 3.8 cms is the value of the

All of these
Downcomer liquid seal in case of a balanced tray design
Skirt clearance for bubble caps
Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.)

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Process Equipment and Plant Design
The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)

A/P
4 A/P
√A
4 P/A

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Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Electrode area
Both A & B
Neither A nor B
Gas flow rate

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Process Equipment and Plant Design
Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the

Ultimate stress to breaking stress
Working stress to ultimate stress
Ultimate stress to working stress
None of these

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Process Equipment and Plant Design
__________ shapedroof is the most commonly used roof for cylinderical storage tanks.

Flat
Umbrella
Conical
Dome

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